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Dynamic Elastic Electron Scattering III: Other ApproachesBesides the Bloch wave and multislice theories introduced in Chapters 2 and 3, there are several other theories on dynamic electron scattering. Each of these methods is convenient for some particular purpose. Chapter 4 introduces these theories, then establishes the equivalence among them.uncertain 发表于 2025-3-24 05:14:45
Reciprocity in Electron Diffraction and ImagingIn electron imaging, TEM and STEM are considered to be equivalent, so that images obtained in both optic configurations have many analogous characteristics, and sometimes they can be interpreted using the same theory. This analogy is based on the reciprocity theorem, which is stated as:从容 发表于 2025-3-24 07:21:26
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,Messen der einzelnen Meßgrößen,fects or the image resolution is so low that the column approximation holds. When the image resolution approaches the atomic level, the dominant contrast mechanism is phase contrast, and the effect of diffraction contrast is minimized. In this case, it is more convenient to apply the multislice theopatriot 发表于 2025-3-24 20:40:33
https://doi.org/10.1007/978-3-322-85652-4Fig. 1.10a. An alternative application of TEM is to study surfaces of bulk crystals in the Bragg case. In this case, a crystal surface is oriented parallel or nearly parallel to the optic axis of the microscope, and the incident electron beam strikes the surface at a grazing angle. Diffraction patte弯腰 发表于 2025-3-25 01:07:24
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